The Lithospheric Structure of the Solonker Suture Zone and Adjacent Areas: Crustal Anisotropy Revealed by a High‐Resolution Magnetotelluric Study
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Bibliographic record
Abstract
Abstract The closure of the Paleo‐Asian Ocean along the Solonker Suture Zone (SSZ) during the Late Permian and Triassic represented the final stage in the formation of the Central Asian Orogenic Belt between the Siberian Craton and the North China Craton. In order to better understand the structure and formation of this ancient plate boundary, a high‐resolution magnetotelluric (MT) profile was collected in 2010–2012 with both broadband and long‐period MT data. Dimensionality analysis showed that a 2‐D analysis was valid. Both 2‐D isotropic and anisotropic resistivity models were derived from the joint inversion of MT and tipper data. The high‐resolution mapping achieved in this study is due to the closely spaced MT stations (2–3 km). The major south dipping conductive layer was detected beneath the SSZ and found to be electrically anisotropic with the highest conductivity in the down dip direction. This feature was interpreted as evidence for southward subduction forming the suture. Previous studies of electrical anisotropy in Paleoproterozoic orogens have reported electrical anisotropy with the maximum conductivity in the strike direction. The high conductivity has been interpreted as being due to graphite or sulfides concentrated in fold hinges. In contrast to these studies, the Solonker Suture conductor shows an enhanced conductivity in the dip direction. The difference between these situations could be explained if the Solonker Suture has the fold axes rotated by high strain into the strike direction. This would result in the highest conductivity being parallel to the dip direction.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
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Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it